Twenty-high roll mill chatter mark monitoring system and method based on angular domain

Abstract

The invention provides a twenty-high roll mill chatter mark monitoring system and method based on an angular domain and belongs to the field of roll mill chatter mark monitoring. The system comprises a twenty-high roll mill, an encoder, a first acceleration sensor, a second acceleration sensor and a monitoring device, wherein the encoder is mounted at one side of a working roll; the first acceleration sensor is mounted on a bearing bush of a third supporting roll, from left to right, of the upper half part; the second acceleration sensor is mounted on a bearing bush of a second supporting roll, from left to right, of the upper half part; the encoder sends a triggering signal to the monitoring device, and the monitoring device calculates a rotating speed of the roll mill according to the triggering signal; the encoder triggers the first acceleration sensor and the second acceleration sensor to collect an angular domain vibration acceleration signal and send the angular domain vibration acceleration signal to the monitoring device; and the monitoring device calculates a parameter characteristic value according to the angular domain vibration acceleration signal. According to the twenty-high roll mill chatter mark monitoring system and method disclosed by the invention, an angular domain signal analysis manner is adopted to improve the accuracy of the twenty-high roll mill chatter mark monitoring.

Description

technical field [0001] The invention relates to a system for monitoring vibration marks of a 20-high rolling mill, in particular to a system and method for monitoring vibration marks of a 20-high rolling mill based on an angle domain. Background technique [0002] On-line control of rolling mill vibration and chatter vibration has always been a worldwide technical problem. Most steel companies in the world have more or less rolling mill vibration problems. The vibration problem of the rolling mill not only seriously affects the mechanical properties and precision of the rolling mill, but also the strong vibration of the rolling mill will seriously affect the surface quality of the product and bring huge economic losses to the enterprise. In order to study the causes of stainless steel strip vibration marks, monitor and control the vibration marks of the rolling mill, and further improve the qualified rate of products, it is necessary to monitor the rolling mill in real time ...

AI Technical Summary

Problems solved by technology

[0004] By summarizing the above literature, it can be found that there are some deficiencies and defects in the current research on rolling mills. Most scholars’ research mainly focuses on the time-domain signal analysis and statistics of rolling mills with a small number of rolls. Due to the complexity of the twenty-high rolling mill itself and precision, and the various parameters of the rolling pass and the rolling process change greatly, so how to better capture the vibration signal that is constantly changing with the rolling pass and the rolling process It is particularly important to locate the fault signal and be able to locate it; and there is a lack of an online monitoring system that can promptly alarm the vibration marks of the rolling mill

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